These option cards can be used for a variety of applications requiring programmable fre
quency outputs. The RS-485 model of this card can be operated as an N.8 frequency syn
thesizer.
Depending on your card model number, the outputs are available in different formats:
RS-485 on a pluggable terminal block
TTL square wave on BNC, or
Sine wave on BNC
Each output can be phase-offset between 0-360° in 0.1°-increments.
Programmable Frequency Card 1204-13 (Sine Wave, BNC): Specifications
Outputs: (4) independently programmable sine wave outputs
Signal Type: +13dBm
Wave Form: sine
Connector: BNC
Output Load Impedance: 50Ω
Output Pulse/Frequency Rates: 1Hz to 25MHz in 0.1-Hz increments
Accuracy: Function of input synchronization source (GPS, IRIG, 1PPS, etc.)
Synchronization: Output frequency locked to SecureSync disciplined 10MHz
Jitter, cycle-to-cycle: n/a
Phase Noise:
-120dBc/Hz @ 1kHz offset
-130dBc/Hz @ 10-kHz offset
-140dBc/Hz @ 100-kHz offset
Harmonics: <-30dBc
Spurious: <-60dBc
Maximum Number of Cards: 6
Ordering Information: 1204-13, Programmable Frequency Card, sine wave, BNC
372 SecureSync User Reference Guide
APPENDIX